Antitipping device



June 7, 1932. A lsENBERG 1,861,799

ANTITIPPING DEVICE Filed Oct. 6. 1930 Patented June 7, 1932 UNITED STATES RUDOLF A. ISENBERG', 0F LOS ALTOS, CALIFORNIA ANTITIPPING DEVICE Application filed October 6, 1930. Serial No. 486,822.

My invention relates to improvements in anti-tipping devices for high-chairs, and the like, wherein a plurality of lateral extensions, rotatably mounted upon the lower ends of the chair legs, operatein conjunction with means for simultaneously moving said extensions or arms to extended positions for in creasing the supporting area of the chair and thereby prevent tipping of the same when the center of gravity of said chair is changed considerably by the excessive leaning over of an occupant.

It is a common custom of infants7 when seated in high-chairs, to lean over to excessive degrees, which practice sometimes changes the center of gravity of the chair and occupant to such an extent that the chair and occupant are precipitated to the floor, and frequently with results that cause serious and sometimes fatal injuries.

As the occupants of high-chairs are considerably immature and incapable of appreciating the serious consequences which might ensue from such practices, I have provided a new and improved device for increasing the supporting area of high-chairs, relative to the height thereof, so that it is practically impossible for the occupant to change the center of gravity of the chair and occupant to Van extent which will cause or permit tipping over.

The primary object of the present invention is to provide a new and improved antitipping device for high-chairs and the like.

Another object is to provide a new and improved anti-tipping device which may be easily and readily adapted to chairs having various distances between the legs thereof.

A further object is to provide a device as set forth, wherein the lateral extensions may be readily adapted to swing within a common horizontal plane or parallel to the ooror other supporting surface.

A further object is to provide an improved anti-tipping device for high-chairs, and the like, which may be readily adapted, within certain limits, to the various degrees of angularity of the legs of dierent chairs.

Another object is to provide a new and improved device .of the character described in which a plurality of lateral horizontal extensions may be extended outwardly beyond the legs of a chair to increase the supporting areaof said chair and thereby prevent tipping over of thesame. v

A further object is to provide a plurality of lateral extensions or arms which may be simultaneously extended to prevent `tipping over of a high-chair, or thelike, and which may be similarly folded within the connes vof the bottoms of the chair legs to facilitate transportation or storage of said chair.

I accomplish these and other objects by means of the improved device disclosed in the drawing forming a part of the present application wherein like characters of reference are used to designate similar parts throughout the specification and drawing, and in which'- l Fig. l is a plan view. of ahigh-chair, or the like, disclosing' the application of myV improvement;

Fig. 2 is a broken rearv elevation of the lower portion of the legs of ahigh-chair with my anti-tipping device attached thereto; and

Fig. 3 is an enlarged broken sectionalview disclosing one method of applying my improvement to oneof the legs of a chair.

' Referring to the drawing the numeral 1 is used to designate in general a high-chair having the usual legs 2. In babyhigh-chairs and similar chairs, such as high stools,lthe

legs are generally Vmore or less outwardly inl clined at the lower end thereof `in orderl to secure the largest possible supporting area for the purpose of imparting stability to the chair and thereby retain the same in an upright position.

In order to apply my invention to chairs having legs of various degrees of inclination and various distances between said legs, and at the same time maintain a flat contact with the floor, I have provided a bushing 3 providedwith an aperture or bore 4 inclined at an angle to the axis ofthe said bushing 3,

within which bore 4 is inserted the leg 2 of the chair l. Rotatably mountedl upon each bushing is a sleeve 6 provided with an annular V-shaped groove 7 for the reception of a flexible V-shaped belt 8. Each sleeve 6 is also provided with a lateral extension or arm 9 having a button l0 on the under side of the outer or free end thereof to engage the floor or other supporting surface and thus prevent contact of the entire under surface of the arm 9 with the floor or supporting surface.

A screw 1l is inserted through a flange l2 on the upper end of each bushing 3 and Vengages the leg 2 of the chair l in order to effectively retain the structure in position.

vWhen the several bushings 3 with their sleeves 6 and rotatably mounted arms 9 have been properly attached to the respective legs 2 of the chair l, the flexible belt 8 isy placed within the respective grooves 7 of the sleeves 6 after all of the arms have been placed in operative positions.

As the belt 8 is flexible it is obvious that it will, within certain limits, readily adapt itself to various distances between the legs 2 of different chairs to which it may be applied.

In operation, one of the arms 9 is extended or moved to its utmost diagonal position with respect to the chair and as all of the arms 9 are connected by the belt 8, the movement of one arm 9 will similarly and simultaneously move all of the other arms 9 to corresponding positions and thereby increase the area or base of support of the chair l and thereby increase its stability, and consequently prevent tipping of said chair l.

When it is desired to transport the chair from one room to another, or to store it temporarily closely to a wall or partition, any one arm 9 is moved to a folded position within the compass or confines of the bottoms of the legs2 which movement will be simultaneously transmitted to the remaining arms and all arms 9 will thus -assume an inoperative position as indicated by the .dotted lines in Figure l of the drawing.

It is obvious that the angular or inclined bore t of the bushings 3 will facilitate leveling, within certain limits, of the under surfaces of the said bushings so that a iat'contact of said under surfaces of the bushings may bel had with the floor or other supporting surface, as a slight rotation of said bushings 3 in either direction will immediately align all bushings Within a common horizontal plane so that the arms or extensions 9 rotatably mounted thereon will move within a horizontal plane and not scrape upon the floor when being moved to an operative or inoperative position.

Having thus described my invention what I claim yas new and desire to secure by Letters Patent isl. An anti-tipping device Vfor high-chairs and the like comprising arms rotatably mounted upon the bottoms of the legs of said chairs and movable to extended positions beyond said legs to increase the supporting base of s aid chair to prevent tipping of the same;

and means connecting all of said arms whereby movement of any one arm will move the remaining arms to similar extended positions.

2. An anti-tipping device for high-chairs and the like comprising an arm rotatably mounted upon the bottom of each leg of said chair whereby said arms may be moved to extended positions beyond the legs of said chair to increase the supporting base thereof and foldable to positions within the confines of the legs to facilitate transportation; and means operatively connecting all of said arms whereby the same may be moved simultaneouslyV to extended Yor folded positions.

3. An anti-tipping device for high-chairs and the like comprising a plurality of arms rotatably mounted upon the bottoms of the legs of said chair whereby said arms may be moved to extended positions beyond said legs to increase the supporting base of said chair and folded to facilitate transportation and storage of the same; and means connecting all of said arms whereby movement of one arm will be communicated to the remaining arms whereby all of said arms may be extended or folded by actuating any one arm.

4. An anti-tipping device for high-chairs and the like comprising a plurality of arms rotatably mounted upon the bottoms of the legs of a chair whereby said arms may be moved to extended positions beyond said legs to increase the supporting base of said chair and foldable to facilitate storage and transportation, said arms being each provided with an annular groove to receive a belt; and a flexible belt mounted within all of lsaid grooves and connecting said arms whereby movement of onev arm may becommunicated to the other arms to extendor fold the same.

5,. An anti-tipping device for high-chairs and the like comprsingbushings mounted upon the lower ends of the legs of a chair; arms, each having one end rotatably mounted upon each bushing and each provided with an annular groove whereby'the opposite end of each arm may be extended beyond said chair to increase the supporting base thereof; and a flexible belt mounted within the grooves and connecting all of the arms whereby said arms may be simultaneously extended or folded.

6. An anti-tipping device for high-chairs and the like comprising a bushing mounted upon the lower end of each chair leg and having anangular aperture therein to receive the lower end of inclined legs, said inclined apertures being provided to permit a horizontal adjustment of the bottom of said bushing relatively to a supporting surface for said chair; a sleeve rotatably mounted upon each bushing and provided with an annular groove to receive a belt and likewise provided with extended arms arranged to increase the supporting area of said chair when said arms are extended beyond the legs of said chair and a belt mounted Within said grooves and connecting all of the arms to extend or fold all of said arms simultaneously, said belt 5 being flexible to accommodated various distances between various chair legs.

In Witness whereof, I hereunto set my signature.

RUDOLF A. ISENBERG. 

